本节主要阐述六种异步方案:回调函数、事件监听、发布/订阅、Promise、Generator和Async。其中重点是发布/订阅、Promise、Async的原理实现，通过对这几点的了解，希望我们前端切图仔能够在修炼内功的路上更进一步。一、六种异步方案1.1 回调函数异步编程的最基本方法，把任务的第二段单独写在一个函数里面，等到重新执行这个任...

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